Glazing machine



June 21, 1927. 1,633,546

D. E. HARDING GLAZING MACHINE a'iifgy June 2l, 1927, D. E. HARDING GLAZING MACHINE 2 Sheets-Sheet 2 Filed May 13, 1925 Patented June 21, 1927.

UNITED STATES 1,633,545 PATENT OFFICE.

DANA E. I-IARDING, OF ARLINGTON, MASSACHUSETTS, ASSIGNOR TO WRIGHTfHARD- ING COMPANY, OF EAST BOSTON,'MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

GLAziNG MACHINE.

Application filed May 13, 1925. Serial N10.-30,032.

l0 the production of a glazed or burnished sur-V face on the hairV side of the leather. This glazing ror burnishing operation is, at the present time, uneconomically performed by machines wherein a rubbing stone is reciprol5 cated on an anvil, the leather, whose surface is to be glazed or burnished, being placed on such anvil and the operator, between the strokes of the vrapidly reciprocating glass,v

shifts the position of the hide or'skin on the 30 anvil in order to bring an unburnished or unglazed portion thereof into position to be operated on by the burnishing glass. The machines employed are crude and are eX- tremely dangerous. It is necessary for the 25 operator to sit beside the machine and the reciprocating arm, to which is attached the burnishing stone, is moved rapidly to and fro. Numerous accidents have been caused, and are caused, on the slightest iniscalcula- 'lo tion on the distance between the operator and the reciprocating arm. Various attempts have been made to reduce the hazard to life and limb, but because of the character of the machine and the function it must 555 necessarily perform, no successful glazing Y' machine has been designed, atleast up to the time applicant rentered the ield. u

` I have found that the glazing or burnishing operation is more readily performed and if) a higher degree of polish or glaze imparted to the'leather if the burnishing or glazing tool can be heated. paratus, tliishas been impossible, both because of the character of the glazing "5 stone or glass and because of the fact that it is necessary to -reciprocate the the same at high speed. In my present invention I have obviated thel objections noted as. being inherent in prior ap- 50 paratus and 4have designed a machine in which reciprocating parts are entirely eliminated, in which tlieglazing or burnishing iron is heated to as' high a degree as is necessary, and in which all danger to the 5"" operator is avoided." In Ycarrying kout my IVith prior types of appresent invention I utilize a corrugated cylinder, preferably o'f burnished metal, apply heat to maintain such corrugated cylinder at the desired temperature, and so mount said cylinder as to have the same rapidly rotated. In conjunction with this cylinder, I arrange a feeding cylinder which is associated with, and rotates in, the saine direction as the burnishing cylinder vand ata greatly lower speed. I arrange the mounting for the'feeding cylinder in such manner as to have the feeding cylinder movable toward and from the corrugated cylinder and the degree of movement is made adjustable so that the pressure exerted on the leather by the interaction of the feeding and corrugated cylinders may be regulated as deprising my invention will appear as thek description of the invention progresses.

In the accompanying drawing illustrating the preferred embodiment of my invention,

Fig. 1 is a side elevation;

Fig. 2 is a front elevation, and

Fig. Sis a fragmentary central sectional side elevation.

Referring to the drawings, 10 designates a frame or base comprised essentially of side frame members 11 spaced apart from cach other and held in position by cross bars 12. Secured to the upper rear .ends of the side frame members 11 by bolts 13V are brackets 111 (but one of which is shown) and secured to the top faces of such brackets 14 are bearings 15v (but one of which is shown), and rotatably mounted in thesev if l.)

bers 11 eXtend rearwardly, as indicated at 20, and on such rearward extensions are secured bearing blocks 21, and rotatably mounted in the bearing blocks 21 is a shaft 22, this shaft being' parallel to the shaft 16 above described. Keyed to the shaft 22 is a pulley 23, this pulley beinginalignment with the pulley 19 above described as beingsecured to the shaft 16, and over these pulleys runs a belt 24 and by means of which power is transmitted from the shaft 16to the shaft 22. The pulley 19 is smaller than the pulley 23 and, therefore, the shaft 22 will be rotated at a slower speed than the shaft 16. At the lower front end of the side framemembers 11 are formed suitable bearings in alignment with each other and in the bearings is rotatably mounted a shaft 25, this shaft being' parallel to the shaft Y Secured to the one end of the shaft 25 is-a directions of the rotation of the shafts 22 and 25 being indicated by arrows on Fig'. 1.

At the upper*- forward end of the side frame members is formed a cut out portion 29 substantially ll-shaped in outline. upper outer edge of the cut out portion 29 of ea h of the side frame members 11 has secured thereto on its under face bearings 30 in which is rotatably mounted a shaft 31, this shaft 31 lying;- parallel to the shaft 16. Adjacent to the inner faces of the side frame .members 11 and secured to the shaft 3 are pulleys 32. Secured to the shaft 16 and in alignment with the pulleys 232 are pulleys 33. @ver the pulleys 82 and 33 run Vbelts 34 and by means of which power is transmitted `from the shaft 16 to the shaftfll., the direction of rotation of such shaft 31 being indicated by the arrow in Fig'. 1. Between the pulleys 32 and secured to the shaft 31 is a hollow cylindrical member 35, this member being' of any desired diameter and length, and, by reference to Fig. 3, it will be noted that such cylindrical member 35 may be, as above described, hollow or may be solid, such feature, however, not being of particular importance. lf made hollow, I may desire to place within the saine means for heating consisting; of an. electrical heating device or gas heating; device or any other suitable mean-s. l prefer, however, in this emiodimentfof my invention, to place parallel with the axis 31 of the cylinder a gas creating element 37 and attach such gas heatelement to a source of fuel supply through a pipey 38, a controlling valve 39 being yplaced in such pipe 88 to control the flew of fluid. Secured. t-othefront of theV The Y side frame members 11 by bolts 40 are brackets 41 and secured to such brackets is a curved plate 42 which partially encloses the cylindrical member and acts to retain the heat generated ,by the heating device 37 so that the cylinder 35 is surrounde'dby the envelope of heated air. i n

Secured to the side frame-members in a position immediately below the bearings 30 are vertically arranged ,guides 43, `such guides being' spaced apart from each other to form parallel guideways. Slidably mounted in each pair of guides 48 isa bearing 44 and inv the bearings 44 is rotatably mounted a shaft 4.5. 45 is a pulley 46 which is in alignment with a pulley 47 secured to the shaft 25. Over the pulleys 46 and 47 runs a belt 48 and by meansof which power is transmitted from the shaft 25 to the shaft 4.5. ASecured to the shaft 45 between the side frame members 11 is a cylinder 49 of any suitable diameter and of approximately the saine length as the cylindrical meinber. yBreferablythe cylindrical member` 49 is covered with a layer 50 of resilient material such as rubber. Pivotally mounted on the shaft 45 andextending downwardly therefrom is a member 51 provided intermediate its ends; with a cross bar 52. Secured to, and extending' between. the side frame members 11 adjacent to the front bottom portion thereof is a shaft 53 en which is mounted a treadle.member 54. One

Secured toene end of the shaft Y portion of the treadle member 54 extends upwardly and is pivotally attached rat its upper end to a shaft 55 secured to the lower end of the member 51, as clearly shown in Fia'. 2. llxtendinlol between the side frame niembers 11 and secured thereto bybolts 56 is a cross plate 527, such cross plate lyine in front of thecross bar 52 above referred te. Ad-

justably secured to the cross bar 57 by nuts the shaft 55. Rotation of the treadle member about the shaft 53 and in the direction of the arrow shown in Fig. 1, foriexample, will cause a forward movement of the. lower end of the frame 51, and the upper end of A nut 61 threaded on the eX-l lee the treadle 54 and the frame 51 act as atogy gle, and the bea-rings 49 move upwardly,'car rying the Ifeeding cylinder therewith and brings .the feeding,` cylinder into close association with the'corrugated cylinder 35. By properly .-proportioning theframe 51 and treadlemember 54, the degree of pressure exerted between therotating,` cylinders 49 and 35 may be any desired. Secured to the side fram'e members by bolts 63 is an angle member 64. Secured to the front faces of the side frame members llby bolts 67 are brackets 66. The upper faces of the angle members 64 and brackets 66 lie in the same horizontal plane, and secured to such upper surfaces in any convenient manner, as by bolts 67, is a worktable 68, such worktable being cut away, as indicated at 69, to allow the feeding cylinder 49 to extend therethrough, as clearly shown in Fig. 3. In thisy Fig. 3 is shown a hide or skin 70 being fed through the cylinders 49 and 35 or in the direction of the arrow shown in such ligure, it being assumed that the cylinders referred to are rotating in the direction of th-e arrows shown.

The member 42 not only acts as a heat retaining shield for the cylinder 35, but also acts as a guard to prevent possible injury to the workman by reason of coming in contact with the rapidly rotating corrugated cylinder 35 and the relatively slowly rotating cylinder 49. The distance bet-ween the lower edge of the shield 42 and the upper face of the worlrtable 68 or the hide or slrin TO is so small that it is impossible for a'worlzman to put his hands into position to be injured. The operation of the device is as follows, it being assumed that the various elements have. been constructed and assembled as above described. Power being` turned into the shaft 16 through the belt 18 and the feeding roll 49 and the corrugated roll 35 ro-` tating in the direction of the arrow shown in the drawings, the heating device 37 is placed in action and the corrugated roll 30 gradually becomes heated. Vhen at the proper degree of heat, the operator takes a hide or skin, TO, placesthe same on a worlttable 68 and allows the same to be fed into position between the rollers 35 and 49. It is found that the hide or shin can be readily retained in any position in which it may be placed without undue effort on the part of the operator, therefore, when the hide or skin is`properly positioned, the operator, by stepping on the treadle 54, moves the bear- -name to this specification.

ings 44 upwardly and bringing the resilient f surface 50 of the feed roll 49 into engagement with the under surface of the hide or skin and forces the upper surface thereof into close association with the rapidly rotating corrugated roll 85. By properly manipulating the hide or skin 70, every portion of the surface thereofis brought into the burnishing andV glazing action of the hea-ted corrugated roll 35, after which pressure on the treadle may be released and the hide either withdrawn or, should it be deemed advisable, such hide or skin may be fed over the rear end of the worktable 68 onto any desired conveying apparatus that it ma be desired to associated with the device.

While I have necessarily'shown and described the preferred embodiment of my inve-ntion somewhat in detail, itis to be understood that I may vary the size, shape,

and arrangement of parts within wide limits without departing from the spiritof the invention. y

Having thus described my invention, what I claim as new is:

1.7In an improved glazing and burnishing machine, the combination of aA rotatably mounted corrugated and heated glazing and burnishing roll, a rotatably mountedV feeding roll, means for rotating said rolls in opposite directions and at different rates of roll mounted on said shaft, a treadle, and

connecting means between the treadle'and said shaft for movingthe same vertically to bring the feeding roll into and out ofv engagement with the corrugated roll.

In testimony whereof, I have signed my DANA E. HARDiNG. 

